There is no problem and the paths are correct. The jail root of a website is /var/www/clients/client1/web1/ and every ssh user has its own homedire inside the jail (/var/www/clients/client1/web1/home/web1). The directory /var/www/clients/client1/web1/web is the web dir and of course this is reachable by the ssh user, as it has the same userid and it is inside the jail.